mcintyre



(No Model.)

I. T. MOINTYRE.

PLOW GLEVIS.

No. 427,603. Patented May 13, 1890.

wiimoa w UNITED STATES INNES T. MOINTYR'E, OF OARROLLTON, MISSISSIPPI,ASSIGNOR OF ONE-HALF ATENT FFIC TO A. E. O ERIEN AND L. C. BRITTIAN,BOTH OF SAME PLACE.

PLOW-CLEVIS SPECIFICATION forming part of Letters Patent No. 427,603,dated May 13, 1890.

Application filed November 22, 1889. Serial No. 331,171. (No model.)

To (LZZ whom it may concern:

Be it known that I, IN NES T, MOINTYRE, of Carrollton, in the county ofCarroll, State of Mississippi, have invented new and usefulImprovementsin Plow-Clevises; and I do hereby declare that the followingis a full, clear, and exact description of my invention, which willenable others skilled in the art to which it pertains to make and useit, reference being had to the accompanying drawings, forming a partthereof.

My invention relates to an improvement in plow-clevises; and it consistsin the peculiar construction of devices that will be more fully setfortl1,a11d particularly pointed out in the claims.

The object of my invention is to provide a clevis which is adapted topermit the Whitfietree to be attached to or detached from the plow, orto be adjusted thereon with great facility and in a very short space oftime 5 and a further object of my invention is to provide a clevis whichis cheap and simple in construction, is very strong and durable, and isdesigned to prevent splitting the plowbeam when under unusual sidestrain.

In the accompanying drawings, Figure l is a perspective view of theclevis embodying my improvements, showing the same attached to theplow-beam. Fig. 2 is an elevation of the same, the parts of the clevisbe ing detached and arranged in position for the attachment, detachment,or adjustment of the whiffletree.

On the upper and lower sides of the plowbeam, at the front end thereof,are arranged longitudinal draw-bars A B, which are made of iron and aresecured in place by bolts 0, which extend through openings in theplowbeam and in the draw-irons. The latter have their front ends, whichproject, bifurcated or forked to form pairs of cars D, and verticalopenings F, which are aligned with each other, are made in the said.ears.

The clevis G is made substantially in the form of the letter E, havingthe upper and lower arms II I adapted to be inserted between the pairsof cars D, and having the short arm K arranged midway between the upperand lower arms, The front portions of the clevis between the arms arecurved to form the eyes L M The wrench N has the plain shank O, whichforms the pivot-bolt and is adapted to pass through the openings in theears and through openings in the arms II I, in order to secure theclevis to the'front ends of the draw-irons, and to adapt the clevis tobe swung laterally-thereon. In the lower end of the wrench shank is anopening R, through which a limbpin may be passed to retain the wrench inposition. The central arm K, which extends nearly to the wrench-shank,serves to retain the eye of the whiflietree at the desired adjustmentand in engagement with either of the eyes L M, as will be readilyunderstood.

In order to attach the whililetree to the plow, it is only necessary towithdraw the boltwrench, and thereby release the clevis, engage thelatter with the eye or link of the whiflietree, and then reinsert thearms of the clevis between the pairs of cars and restore the wrench orbolt to the position before described.

The cars of the draft-irons, by forming four bearings for thewrench-bolt, serve effectually to brace and stiffen the latter and prevent it from being forced out of shape or bent by the strain on theclevis, and hence the wrench-bolt is kept straight and maybe veryreadily withdrawi'rfrom or reinstated in the clevis when detaching oradjusting the whiffletree. By pivoting the clevis on the wrenchbolt, asbefore described, the clevis is adapted to swing laterally with themovements of the team, and hence has no tendency to split the end of theplow-beam, as is the ease with the elevises now in common use Havingthus described my invention, I ClLlX1l" 1, The combination of thedraftirons attached to the plow-beam, the clevis G, and the boltengaging openings in the draft-irons and clevis, and thereby pivotingthe latter,

the said clevis having the arm K extending nearly to the bolt, for thepurpose set forth, substantially as described 2. The combination of thedraft-irons adapted to be attached to the beam, the E-shapecl Intestimony that I claim the foregoing I olevis G, having the arms 11 I,with openings hereunto append my signature. aligning with openings inthe draft-irons, and

provided further with the arm K, for the pur- I. T. MOINTYRE. 5 pose setforth and the bolt 0 in the openings Witnesses:

of the draft-irons and clevis and pivoting the PERCY R. SOMERVILLE,

latter, substantially as described. J. M. JONES.

